What is the optimal temperature for the human body to feel?

What is the most comfortable indoor temperature? Experts have found through experiments that 80% of people feel comfortable in winter with a temperature range of 17 to. When the indoor air temperature is 18, half of the people will feel cold when sitting; When the temperature is below 12, 80% of people feel cold when they sit, and some people feel uncomfortably cold, and more than 20% of people who move around feel cold.

Experts say that if the indoor temperature is around 18, the relative humidity.

Control at 30% to 40%, the human body feels the most comfortable.

The first thing is to make the person feel comfortable. In terms of temperature, the temperature that makes a person feel neither hot nor cold is called"Physiological zero"。Physiological zero is the temperature at which a person feels most comfortable.

Different people will have different physiological zero degrees. For a normal person who is generally healthy, the physiological zero degree is about 28 29. Therefore, the temperature of an air-conditioned room should be selected as close to this temperature as possible.

Secondly, it should be good for health. The temperature difference between indoor and outdoor should not be too large, generally 5 10 is appropriate.

If the temperature difference is too large, people will experience sudden changes in temperature when entering and exiting, and they are prone to colds and other diseases.

Third, we should consider saving electricity, and if the temperature is adjusted too low during cooling or too high during heating, it will consume more energy. Therefore, from the consideration of power saving, the room temperature should not be adjusted too low in summer and too high in winter.

So, all things considered, the reasonable temperature of an air-conditioned room is 28 to 29 in summer. Winter should be 18 20

20 to 25 degrees.

It's 30 degrees Celsius.

20 to 25 degrees is the most comfortable.

In summer, the most comfortable temperature is 19 to 24, and in winter, the most comfortable temperature is 17 to 22.

People feel hot when the ambient temperature exceeds the upper limit of the comfortable temperature, and when it exceeds 37, they feel very hot, and the upper limit of the temperature that the average person can tolerate is 52. On the contrary, when the ambient temperature is below the lower limit of the comfortable temperature, the person feels cold and cold; If it is below 0, it will be cold. For people who are generally well-dressed for outdoor activities, the lower limit of the temperature they can tolerate is about minus 34.

Factors influencing the comfortable temperature of the human body:

First, the basic factors.

There are many factors that determine the thermal comfort of the human body, including physiological and psychological factors, and there are 6 main ones:

1. Physiological metabolic rate; 2. Thermal resistance of clothing; 3. Air dry-bulb temperature; 4. Ambient radiation temperature; 5. Wind speed, 6. Air humidity.

Almost all existing thermal comfort models are based on the above six basic variables to judge human thermal comfort.

2. Other secondary factors.

There are also some factors that are generally believed to affect a person's thermal comfort, including age, gender, season, race, etc. However, Western scholars have shown that some factors, including age, gender, season, race, etc., do not actually have a significant impact on the thermal comfort of the human body.

20 to 25 degrees.

It's 30 degrees Celsius.

20 to 25 degrees is the most comfortable.

Dr. Li from Beijing Hospital said that 30 is the most comfortable, and the human body will feel moderately cool and hot at such a temperature. If you work continuously at a temperature of 33 for two or three hours, the sweat glands, which act as the body's "air conditioner", will start to kick in and dissipate the accumulated body temperature through a slight sweat. At 35 o'clock, the superficial veins will dilate, sweat slightly, increase heartbeat, and blood circulation will accelerate.

At this time, for some elderly and frail people with poor heat dissipation, local cooling is required to avoid adverse symptoms. The temperature at which the body starts to alarm is 36.

Generally speaking, we say that the temperature under the armpit is more than 36 to 37 degrees, which is basically normal, of course, this is for the vast majority of people. If the body temperature is too high, then 39 degrees should be a high fever, at this time we can use some antipyretic treatment, then the antipyretic can use some physical cooling methods, or you can use some antipyretic drugs to help it lower the body temperature.

The normal body temperature of a person is degrees.

We found that the perceived temperature is not the same as the actual temperature because they are measured and felt differently.

We must know that the body temperature is the temperature we actually feel, it is what our human body feels, and it is not fixed, and the body temperature is sometimes related to our mood or the amount of clothing. However, the actual temperature and the perceived temperature are completely different.

The actual temperature is measured by the weather station, and the temperature is announced every day, and the actual temperature is the same in each area and does not vary from person to person. It is a more scientific measurement of the standard of comparison. The body temperature is different from person to person, according to our own physique, the amount of clothes, or the mood can slightly determine our body temperature.

Sometimes the difference between the perceived temperature and the actual temperature is quite large, for example, in the summer, the actual temperature may not be particularly high, but in the summer, the temperature we feel, the perceived temperature is very high, which is the difference between the two.

Because the actual temperature does not fully represent our physical temperature, the actual temperature only represents the cold and warm of the air, and there are too many factors affecting the cold and warmth of our human body.

If the relative humidity of the air is higher when the weather is hotter, it will make us feel hotter than the actual temperature, and if the relative humidity is small, we will also feel better, and the wind speed is also very related to it.

Therefore, we must pay attention to our body temperature when we go out, and don't rely on the actual temperature we know to determine how much we are wearing. Because this judgment is one-sided, it may have a little effect on our body.

The optimal temperature in the room is 16-18 degrees Celsius in winter and 24-26 degrees Celsius in summer.

If the temperature is set too low, the body's metabolic function will decline, the pulse will slow down, the subcutaneous blood vessels will constrict, and the doors and windows need to be closed to open the floor heating, and the air cannot be circulated, which has a great impact on the elderly, children and pregnant women.

The heating temperature should not be too low in winter. When the temperature is lower than 12, 80% of seated people will feel cold, and 20% of active people will feel cold, so hygiene will use 12 as the lower limit of the building's thermal environment.